public plugin_init()
{
     register_plugin(PLUGIN, VERSION, AUTHOR)
      
     register_event("CurWeapon", "Event_CurWeapon", "b");
}

public Event_CurWeapon(iIndex)
{
     new iWpn = get_user_weapon(iIndex);
      
     if (1 << iWpn & SNIPER_WEAPONS)
     {
         set_task(1.0, "Task_ShowCh", iIndex + 100, _, _, "b");
     }
     else
     {
         remove_task(iIndex + 100);
     }
}

public Task_ShowCh(TaskId)
{
      
}